December weather in Lebanon, SD
The average temperature in Lebanon in December is 19.5°F (10.1°F–28.9°F). Average precipitation: 0.40 inches. Average snowfall is 6.7 inches.
December is a winter month in Lebanon, and is cooler than the annual average of 44.3°F. Daily temperatures swing about 18.8°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 8h 35m. For travel, December is cold.
Avg High
28.9°F
Avg Low
10.1°F
Precipitation
0.40 in
Snow
6.7 in
December records in Lebanon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.9°F (1998) | -16.1°F (2014) | 0.63 in (1981) |
| December 2 | 68.0°F (2021) | -17.0°F (1985) | 0.55 in (1933) |
| December 3 | 69.1°F (1941) | -16.1°F (1985) | 0.42 in (1903) |
| December 4 | 64.9°F (1965) | -9.9°F (2005) | 0.07 in (1971) |
| December 5 | 62.1°F (1939) | -16.1°F (2005) | 0.69 in (1960) |
| December 6 | 69.1°F (1939) | -23.1°F (1950) | 0.42 in (1951) |
| December 7 | 55.0°F (1965) | -23.1°F (2013) | 0.60 in (1963) |
| December 8 | 55.9°F (1939) | -20.9°F (1932) | 0.28 in (1971) |
| December 9 | 61.0°F (1939) | -22.0°F (1977) | 0.22 in (2008) |
| December 10 | 61.0°F (1956) | -22.0°F (1977) | 0.53 in (1970) |
| December 11 | 62.1°F (1939) | -22.0°F (2013) | 0.85 in (1965) |
| December 12 | 53.1°F (1957) | -25.1°F (1932) | 0.10 in (1963) |
| December 13 | 51.1°F (2014) | -22.0°F (1903) | 0.24 in (1937) |
| December 14 | 57.9°F (1998) | -20.0°F (1903) | 0.30 in (1975) |
| December 15 | 55.0°F (1939) | -23.1°F (1951) | 1.00 in (2000) |
| December 16 | 68.0°F (2004) | -23.1°F (1964) | 0.15 in (1964) |
| December 17 | 69.1°F (2004) | -20.0°F (1964) | 4.00 in (2000) |
| December 18 | 57.0°F (1982) | -26.0°F (2016) | 0.43 in (2002) |
| December 19 | 57.0°F (1979) | -25.1°F (1955) | 0.28 in (1960) |
| December 20 | 55.9°F (1941) | -22.0°F (1983) | 0.46 in (1902) |
| December 21 | 53.1°F (1957) | -31.0°F (1989) | 0.31 in (1967) |
| December 22 | 55.0°F (1957) | -31.0°F (1989) | 0.30 in (1931) |
| December 23 | 54.0°F (1950) | -31.0°F (1983) | 0.22 in (1988) |
| December 24 | 48.9°F (1963) | -31.0°F (1983) | 0.30 in (1977) |
| December 25 | 51.1°F (1999) | -26.0°F (1983) | 0.24 in (1978) |
| December 26 | 51.1°F (1956) | -26.0°F (1933) | 1.02 in (2016) |
| December 27 | 48.9°F (1956) | -15.0°F (2017) | 0.30 in (1988) |
| December 28 | 53.1°F (1980) | -15.0°F (1993) | 3.00 in (2000) |
| December 29 | 55.0°F (1999) | -23.1°F (1990) | 2.00 in (2000) |
| December 30 | 48.9°F (1980) | -29.9°F (1990) | 0.40 in (1931) |
| December 31 | 51.1°F (1999) | -32.1°F (1967) | 0.48 in (1972) |